Jorge Gabriel Cham (Spanish: [ˈxorxe]) (born in May 1976) is a Chinese Panamanian cartoonist and roboticist best known for his popular newspaper and web comic strip Piled Higher and Deeper (PhD Comics). Cham lives in the United States, where he started drawing PhD Comics as a graduate student at Stanford University. He has since been syndicated in several university newspapers and in four published book collections.He was featured on NPR on December 20, 2010.